Whisk together mayo, greek yogurt, apple cider vinegar, honey, poppy seeds, salt and pepper in a small bowl.
Add chicken, grapes, pecans, onion, celery into a large bowl. Pour dressing over and toss to combine. Taste and adjust seasonings, if needed.
Enjoy right away or chill before serving. Serve with crackers for a snack or appetizer, on bread or a wrap for a sandwich or over a bed of greens.
Place salad in an airtight container in the fridge. The salad will keep for 3-5 days.
